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Park CH, Yong A, Lee SH.Park CH, et al.J Korean Neurosurg Soc. 2010 Jun;47(6):420-3. doi: 10.3340/jkns.2010.47.6.420. Epub 2010 Jun 30.J Korean Neurosurg Soc. 2010.PMID: 20617085Free PMC article.
Park CH, Lee SH, Kim BI.Park CH, et al.Pain Med. 2010 Nov;11(11):1654-8. doi: 10.1111/j.1526-4637.2010.00941.x. Epub 2010 Aug 31.Pain Med. 2010.PMID: 20807343Clinical Trial.
Park CH, Lee SH, Lee SC, Park HS.Park CH, et al. Among authors: park hs.Korean J Pain. 2011 Jun;24(2):87-92. doi: 10.3344/kjp.2011.24.2.87. Epub 2011 Jun 3.Korean J Pain. 2011.PMID: 21716616Free PMC article.
Park CH, Lee SH, Park HS.Park CH, et al. Among authors: park hs.Pain Physician. 2011 Jul-Aug;14(4):353-60.Pain Physician. 2011.PMID: 21785478Free article.Clinical Trial.